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Su Y, Cai X, Fan X, Ning J, Shen M. Effect of Trace Element Selenium on the Intestinal Microbial Community in Nude Mice with Colorectal Cancer. Microorganisms 2024; 12:1336. [PMID: 39065104 PMCID: PMC11279152 DOI: 10.3390/microorganisms12071336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Revised: 05/31/2024] [Accepted: 06/18/2024] [Indexed: 07/28/2024] Open
Abstract
Colorectal cancer (CRC) is the third most common cancer worldwide. The role of intestinal microbiota in carcinogenesis has also become an important research topic, and CRC is closely related to the intestinal microbiota. Selenium-containing compounds have attracted more attention as anticancer drugs as they can have minimal side effects. The purpose of this study was to determine and compare the effect of sodium selenite and selenomethionine on the microbial communities of nude mice with CRC. A CRC ectopic tumorigenesis model was established by subcutaneously injecting HCT116 cells into nude mice. The mice were then intraperitoneally injected with sodium selenite and selenomethionine for 24 days to regulate their intestinal microbiota. Compared with sodium selenite, selenomethionine resulted in a greater reduction in the richness and diversity of intestinal microbiota in nude mice with CRC, and the richness and diversity were closer to healthy levels. Selenomethionine also regulated a wider variety of flora. Additionally, sodium selenite and selenomethionine produced different microorganisms, changed function and metabolic pathways in the intestinal microbiota. Both sodium selenite and selenomethionine have certain effects on restoring the intestinal microbial diversity in nude mice with CRC, and the effect of selenomethionine is better than that of sodium selenite.
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Affiliation(s)
| | | | | | | | - Mei Shen
- Department of Hygiene Inspection & Quarantine Science, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, China; (Y.S.); (X.C.); (X.F.); (J.N.)
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2
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Chan LS, Liu J, Li MSC, Li L, Tao Q, Mok TSK. Selenite as a dual apoptotic and ferroptotic agent synergizes with EGFR and KRAS inhibitors with epigenetic interference. Clin Epigenetics 2023; 15:36. [PMID: 36864513 PMCID: PMC9983273 DOI: 10.1186/s13148-023-01454-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 02/22/2023] [Indexed: 03/04/2023] Open
Abstract
BACKGROUND Selenium, an essential trace element, has previously been investigated as a pro-apoptotic and DNA demethylation agent. It sensitizes the response to chemotherapy in patients who were refractory to cytotoxic agents. Meanwhile, ferroptosis is a novel approach to cancer treatment by triggering cell death and reversing drug resistance. The role of selenium in treating cancer cells harboring druggable oncogenic alterations and its underlying mechanism are largely unknown. RESULTS We treated lung adenocarcinoma cell lines-EGFR-mutant H1975 (H1975 EGFR p.L858R and p.T790M) and KRAS-mutant H358 (H358 KRAS p.G12C), with sodium selenite to examine its effect on cell apoptosis, ferroptosis, and DNA methylation, as well as its interaction with existing targeted therapy, osimertinib, and adagrasib. We observed selenite to be a dual apoptotic and ferroptotic agent on lung cancer cells, associated with the activation of p38-ATF4-DDIT3 axis in the unfolded protein response. Ferroptosis induction was more remarkable in H1975 than H358. Selenite also altered cellular DNA methylation machinery through downregulating DNMT1 and upregulating TET1, though not as a major mechanism of its activity. Low-dose selenite synergized with osimertinib in EGFR-mutant H1975, and with adagrasib in KRAS-mutant H358, with stronger synergism observed in H1975. CONCLUSION These results suggest that selenite is a potential apoptotic and ferroptotic drug candidate for the treatment of especially EGFR- and potentially KRAS-mutant lung cancer.
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Affiliation(s)
- Lok Seng Chan
- Cancer Epigenetics Laboratory, Department of Clinical Oncology, State Key Laboratory of Translational Oncology, Sir YK Pao Center for Cancer and Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Room 315, Sir Yue-Kong Pao Center for Cancer, Shatin, Hong Kong
| | - Johnson Liu
- Cancer Epigenetics Laboratory, Department of Clinical Oncology, State Key Laboratory of Translational Oncology, Sir YK Pao Center for Cancer and Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Room 315, Sir Yue-Kong Pao Center for Cancer, Shatin, Hong Kong
| | - Molly S C Li
- Cancer Epigenetics Laboratory, Department of Clinical Oncology, State Key Laboratory of Translational Oncology, Sir YK Pao Center for Cancer and Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Room 315, Sir Yue-Kong Pao Center for Cancer, Shatin, Hong Kong
| | - Lili Li
- Cancer Epigenetics Laboratory, Department of Clinical Oncology, State Key Laboratory of Translational Oncology, Sir YK Pao Center for Cancer and Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Room 315, Sir Yue-Kong Pao Center for Cancer, Shatin, Hong Kong
| | - Qian Tao
- Cancer Epigenetics Laboratory, Department of Clinical Oncology, State Key Laboratory of Translational Oncology, Sir YK Pao Center for Cancer and Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Room 315, Sir Yue-Kong Pao Center for Cancer, Shatin, Hong Kong.
| | - Tony S K Mok
- Cancer Epigenetics Laboratory, Department of Clinical Oncology, State Key Laboratory of Translational Oncology, Sir YK Pao Center for Cancer and Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Room 315, Sir Yue-Kong Pao Center for Cancer, Shatin, Hong Kong
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3
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Selenium and tellurium in the development of novel small molecules and nanoparticles as cancer multidrug resistance reversal agents. Drug Resist Updat 2022; 63:100844. [DOI: 10.1016/j.drup.2022.100844] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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4
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Larrouquère L, Berthier S, Chovelon B, Garrel C, Vacchina V, Paucot H, Boutonnat J, Faure P, Hazane-Puch F. Preclinical Evaluation of Sodium Selenite in Mice: Toxicological and Tumor Regression Studies after Striatum Implantation of Human Glioblastoma Stem Cells. Int J Mol Sci 2021; 22:ijms221910646. [PMID: 34638987 PMCID: PMC8508933 DOI: 10.3390/ijms221910646] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/16/2021] [Accepted: 09/27/2021] [Indexed: 01/06/2023] Open
Abstract
Glioblastoma (GBM) is the most aggressive malignant glioma, with a very poor prognosis; as such, efforts to explore new treatments and GBM’s etiology are a priority. We previously described human GBM cells (R2J-GS) as exhibiting the properties of cancer stem cells (growing in serum-free medium and proliferating into nude mice when orthotopically grafted). Sodium selenite (SS)—an in vitro attractive agent for cancer therapy against GBM—was evaluated in R2J-GS cells. To go further, we launched a preclinical study: SS was given orally, in an escalation-dose study (2.25 to 10.125 mg/kg/day, 5 days on, 2 days off, and 5 days on), to evaluate (1) the absorption of selenium in plasma and organs (brain, kidney, liver, and lung) and (2) the SS toxicity. A 6.75 mg/kg SS dose was chosen to perform a tumor regression assay, followed by MRI, in R2J-GS cells orthotopically implanted in nude mice, as this dose was nontoxic and increased brain selenium concentration. A group receiving TMZ (5 mg/kg) was led in parallel. Although not reaching statistical significance, the group of mice treated with SS showed a slower tumor growth vs. the control group (p = 0.08). No difference was observed between the TMZ and control groups. We provide new insights of the mechanisms of SS and its possible use in chemotherapy.
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Affiliation(s)
- Louis Larrouquère
- Medical Oncology Department, Centre Léon Bérard, 69000 Lyon, France;
| | - Sylvie Berthier
- Cytometry Platform, Institute of Biology and Pathology, Grenoble Alpes Hospital, 38000 Grenoble, France; (S.B.); (J.B.)
- Unit of Anatomopathology, Institute of Biology and Pathology, Grenoble Alpes Hospital, 380000 Grenoble, France
| | - Benoit Chovelon
- Unit Nutritional and Hormonal Biochemistry, Institute of Biology and Pathology, Grenoble Alpes Hospital, 38000 Grenoble, France; (B.C.); (C.G.); (P.F.)
- Department of Molecular Pharmacochemistry, University Grenoble Alpes, CNRS, UMR 5063, 38000 Grenoble, France
| | - Catherine Garrel
- Unit Nutritional and Hormonal Biochemistry, Institute of Biology and Pathology, Grenoble Alpes Hospital, 38000 Grenoble, France; (B.C.); (C.G.); (P.F.)
| | | | - Hugues Paucot
- University of Pau & des Pays de l’Adour, FORCO, Bâtiment d’Alembert-Rue Jules Ferry, BP 27540-64075 Pau CEDEX, France;
| | - Jean Boutonnat
- Cytometry Platform, Institute of Biology and Pathology, Grenoble Alpes Hospital, 38000 Grenoble, France; (S.B.); (J.B.)
- Unit of Anatomopathology, Institute of Biology and Pathology, Grenoble Alpes Hospital, 380000 Grenoble, France
| | - Patrice Faure
- Unit Nutritional and Hormonal Biochemistry, Institute of Biology and Pathology, Grenoble Alpes Hospital, 38000 Grenoble, France; (B.C.); (C.G.); (P.F.)
- Department of Molecular Pharmacochemistry, University Grenoble Alpes, CNRS, UMR 5063, 38000 Grenoble, France
| | - Florence Hazane-Puch
- Unit Nutritional and Hormonal Biochemistry, Institute of Biology and Pathology, Grenoble Alpes Hospital, 38000 Grenoble, France; (B.C.); (C.G.); (P.F.)
- Correspondence: ; Tel.: +33-476769316
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5
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Liang ZZ, Zhu RM, Li YL, Jiang HM, Li RB, Wang Q, Tang LY, Ren ZF. Differential epigenetic profiles induced by sodium selenite in breast cancer cells. J Trace Elem Med Biol 2021; 64:126677. [PMID: 33246299 DOI: 10.1016/j.jtemb.2020.126677] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 10/28/2020] [Accepted: 11/05/2020] [Indexed: 12/16/2022]
Abstract
OBJECTIVES Selenium (Se) was a potential anticancer micronutrient with proposed epigenetic effect. However, the Se-induced epigenome in breast cancer cells was yet to be studied. METHODS The profiles of DNA methylation, microRNA (miRNA), long non-coding RNA (lncRNA), and message RNA (mRNA) in breast cancer cells treated with sodium selenite were examined by microarrays. We verified the epigenetic modifications by integrating their predicted target genes and differentially expressed mRNAs. The epigenetically regulated genes were further validated in a breast cancer cohort by associating with tumor progression. We conducted a series of bioinformatics analyses to assess the biological function of these validated genes and identified the critical genes. RESULTS The Se-induced epigenome regulated the expression of 959 genes, and 349 of them were further validated in the breast cancer cohort. Biological function analyses suggested that these validated genes were enriched in several cancer-related pathways, such as PI3K/Akt and metabolic pathways. Based on the degrees of expression change, hazard ratio difference, and connectivity, NEDD4L and FMO5 were identified as the critical genes. CONCLUSIONS These results confirmed the epigenetic effects of sodium selenite and revealed the epigenetic profiles in breast cancer cells, which would help understand the mechanisms of Se against breast cancer.
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Affiliation(s)
- Zhuo-Zhi Liang
- School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Rui-Mei Zhu
- School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Yue-Lin Li
- School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Hong-Mei Jiang
- School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Ruo-Bi Li
- School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Qing Wang
- School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Lu-Ying Tang
- The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630, China.
| | - Ze-Fang Ren
- School of Public Health, Sun Yat-sen University, Guangzhou 510080, China.
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6
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Manda K, Kriesen S, Hildebrandt G. The solvent and treatment regimen of sodium selenite cause its effects to vary on the radiation response of human bronchial cells from tumour and normal tissues. Med Oncol 2020; 37:115. [PMID: 33205219 PMCID: PMC7671986 DOI: 10.1007/s12032-020-01437-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 10/30/2020] [Indexed: 01/08/2023]
Abstract
Sodium selenite is often given to moderate the side effects of cancer therapy to enhance the cellular defence of non-cancerous cells. To determine whether sodium selenite during radiotherapy protects not only normal cells but also cancer cells, which would imply a reduction of the desired effect of irradiation on tumour during radiotherapy, the effect of the combined treatment of irradiation and sodium selenite was investigated. Human bronchial cells from carcinoma (A549) and normal tissue (BEAS-2B) were treated with sodium selenite and effects on growth and in combination with radiation on metabolic activity and cell cycle distribution were studied. The influence on radiosensitivity was determined via colony forming assays using different solvents of sodium selenite and treatment schedules. It was shown that sodium selenite inhibits growth and influences cell cycle distribution of both normal and tumour cells. Metabolic activity of normal cells decreased more rapidly compared to that of cancer cells. The influence of sodium selenite on radiation response depended on the different treatment schedules and was strongly affected by the solvent of the agent. It could be shown that the effect of sodium selenite on radiation response is strongly dependent on the respective experimental in vitro conditions and ranges from lead to an initially suspected but ultimately no real radioprotection to radiosensitizing up to no effect in one and the same cell line. This might be a reason for controversially described cell responses to radiation under the influence of sodium selenite in studies so far.
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Affiliation(s)
- Katrin Manda
- Department of Radiotherapy and Radiation Oncology, University Medical Center Rostock, Suedring 75, 18059 Rostock, Germany
| | - Stephan Kriesen
- Department of Radiotherapy and Radiation Oncology, University Medical Center Rostock, Suedring 75, 18059 Rostock, Germany
| | - Guido Hildebrandt
- Department of Radiotherapy and Radiation Oncology, University Medical Center Rostock, Suedring 75, 18059 Rostock, Germany
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7
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Ali W, Spengler G, Kincses A, Nové M, Battistelli C, Latacz G, Starek M, Dąbrowska M, Honkisz-Orzechowska E, Romanelli A, Rasile MM, Szymańska E, Jacob C, Zwergel C, Handzlik J. Discovery of phenylselenoether-hydantoin hybrids as ABCB1 efflux pump modulating agents with cytotoxic and antiproliferative actions in resistant T-lymphoma. Eur J Med Chem 2020; 200:112435. [DOI: 10.1016/j.ejmech.2020.112435] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 04/23/2020] [Accepted: 05/06/2020] [Indexed: 02/08/2023]
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8
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Khan S, Ullah MW, Siddique R, Liu Y, Ullah I, Xue M, Yang G, Hou H. Catechins-Modified Selenium-Doped Hydroxyapatite Nanomaterials for Improved Osteosarcoma Therapy Through Generation of Reactive Oxygen Species. Front Oncol 2019; 9:499. [PMID: 31263675 PMCID: PMC6585473 DOI: 10.3389/fonc.2019.00499] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Accepted: 05/24/2019] [Indexed: 12/18/2022] Open
Abstract
Osteosarcoma is the most common bone cancer with limited therapeutic options. It can be treated by selenium-doped hydroxyapatite owing to its known antitumor potential. However, a high concentration of Se is toxic toward normal and stem cells whereas its low concentration cannot effectively remove cancer cells. Therefore, the current study was aimed to improve the anticancer activity of Se-HAp nanoparticles through catechins (CC) modification owing to their high cancer therapeutic value. The sequentially developed catechins modified Se-HAp nanocomposites (CC/Se-HAp) were characterized for various physico-chemical properties and antitumor activity. Structural analysis showed the synthesis of small rod-like single phase HAp nanoparticles (60 ± 15 nm), which effectively interacted with Se and catechins and formed agglomerated structures. TEM analysis showed the internalization and degradation of CC/Se-HAp nanomaterials within MNNG/HOS cells through a non-specific endocytosis process. Cell toxicity analysis showed that catechins modification improved the antitumor activity of Se-HAp nanocomposites by inducing apoptosis of human osteosarcoma MNNG/HOS cell lines, through generation of reactive oxygen species (ROS) which in turn activated the caspase-3 pathway, without significantly affecting the growth of human normal bone marrow stem cells (hBMSCs). qPCR and western blot analyses revealed that casp3, p53, and bax genes were significantly upregulated while cox-2 and PTK-2 were slightly downregulated as compared to control in CC/Se-HAp-treated MNNG/HOS cell lines. The current study of combining natural biomaterial (i.e., catechins) with Se and HAp, can prove to be an effective therapeutic approach for bone cancer therapy.
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Affiliation(s)
- Suliman Khan
- The Department of Cerebrovascular Diseases, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,The Key Laboratory of Aquatic Biodiversity and Conservation of Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Muhammad Wajid Ullah
- Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan, China
| | - Rabeea Siddique
- The Department of Cerebrovascular Diseases, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan, China
| | - Yang Liu
- The Department of Cerebrovascular Diseases, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Medical Key Laboratory of Translational Cerebrovascular Diseases, Zhengzhou, China
| | - Ismat Ullah
- State Key Laboratory of Materials Processing and Die/Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, China
| | - Mengzhou Xue
- The Department of Cerebrovascular Diseases, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Medical Key Laboratory of Translational Cerebrovascular Diseases, Zhengzhou, China
| | - Guang Yang
- Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan, China
| | - Hongwei Hou
- The Key Laboratory of Aquatic Biodiversity and Conservation of Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
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9
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Zeng R, Liang Y, Farooq MU, Zhang Y, Ei HH, Tang Z, Zheng T, Su Y, Ye X, Jia X, Zhu J. Alterations in transcriptome and antioxidant activity of naturally aged mice exposed to selenium-rich rice. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:17834-17844. [PMID: 31037530 DOI: 10.1007/s11356-019-05226-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Accepted: 04/17/2019] [Indexed: 06/09/2023]
Abstract
Selenium (Se) is a vital element which leads to strong antioxidation in animals and humans. However, the mechanism underlying natural cereal Se-induced biological changes is not well understood. This study intended to explore the gene differential expression in naturally aged mice exposed to selenium by RNA-Seq technique. A total spectrum of 53 differentially expressed genes was quantified in mice heart tissues treated with Se-rich and general rice. The GO functional annotation of differentially expressed genes disclosed the enrichment of cellular process, ionic binding, biological regulation, and catalytic activity. One hundred twenty-three differential pathways (cardiovascular diseases, immune system, transport and catabolism, longevity regulating, and PI3K-AKT signaling) were identified according to KEGG metabolic terms. Afterwards, the effect of Se-rich rice on the antioxidant activity was assessed. The selenium-rich diet increased the total antioxidant capacity (T-AOC), superoxide dismutase (SOD), and glutathione peroxidase (GSH-Px) in mice serum and livers while significantly reduces methane dicarboxylic aldehyde (MDA) contents. FOXO1 and FOXO3 genes, which acted as the regulators of apoptosis and the antioxidant enzyme, were significantly enhanced in mice when fed with Se-rich rice. In short, the present findings disclosed the alluring insights of organic and inorganic selenium sources on certain biological processes and antioxidant activity of living bodies. However, long-term trials are still required to draw a definitive conclusion, including risks and benefit analysis for various management strategies.
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Affiliation(s)
- Rui Zeng
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Yuanke Liang
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Muhammad Umer Farooq
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Yujie Zhang
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Hla Hla Ei
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Zhichen Tang
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Tengda Zheng
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Yang Su
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Xiaoying Ye
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Xiaomei Jia
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Jianqing Zhu
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.
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10
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Abd-Rabou AA, Shalby AB, Ahmed HH. Selenium Nanoparticles Induce the Chemo-Sensitivity of Fluorouracil Nanoparticles in Breast and Colon Cancer Cells. Biol Trace Elem Res 2019; 187:80-91. [PMID: 29748931 DOI: 10.1007/s12011-018-1360-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 04/19/2018] [Indexed: 01/02/2023]
Abstract
Drug resistance is a major challenge of breast and colon cancer therapies leading to treatment failure. The main objective of the current study is to investigate whether selenium nanoparticles (nano-Se) can induce the chemo-sensitivity of 5-fluorouracil (FU)-encapsulated poly (D, L-lactide-co-glycolide) nanoparticles (nano-FU) in breast and colon cancer cell lines. Nano-Se and nano-FU were synthesized and characterized, then applied individually or in combination upon MCF7, MDA-MB-231, HCT 116, and Caco-2 cancerous cell lines. Cytotoxicity, cellular glucose uptake, and apoptosis, as well as malondialdehyde (MDA), nitric oxide (NO), and zinc (Zn) levels, were investigated upon the different treatments. We have resulted that nano-FU induced cell death in MCF7 and Caco-2 more effectively than MDA-MB-231 and HCT 116 cell lines. Moreover, nano-FU plus nano-Se potentiate MCF7 and Caco-2 chemo-sensitivity were higher than MDA-MB-231 and HCT 116 cancerous cell lines. It is relevant to note that Se and FU nano-formulations inhibited cancer cell bioenergetics via glucose uptake slight blockage. Furthermore, nano-FU increased the levels of NO and MDA in media over cancer cells, while their combinations with nano-Se rebalance the redox status with Zn increment. We noticed that MCF7 cell line is sensitive, while MDA-MB-231 cell line is resistant to Se and nano-Se. This novel approach could be of great potential to enhance the chemo-sensitivity in breast and colon cancer cells.
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Affiliation(s)
- Ahmed A Abd-Rabou
- Hormones Department, Medical Research Division, National Research Centre, P.O. 12622, Dokki, Giza, Egypt
| | - Aziza B Shalby
- Hormones Department, Medical Research Division, National Research Centre, P.O. 12622, Dokki, Giza, Egypt
| | - Hanaa H Ahmed
- Hormones Department, Medical Research Division, National Research Centre, P.O. 12622, Dokki, Giza, Egypt.
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11
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Zhou ZF, Sun TW, Qin YH, Zhu YJ, Jiang YY, Zhang Y, Liu JJ, Wu J, He SS, Chen F. Selenium-doped hydroxyapatite biopapers with an anti-bone tumor effect by inducing apoptosis. Biomater Sci 2019; 7:5044-5053. [DOI: 10.1039/c9bm00953a] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Functional Se-HA/chitosan biopapers constructed with self-assembled Se-doped HA nanowires and chitosan have been reported and display high performances in in vitro/vivo anti-tumor studies.
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12
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Zhang T, Zhao G, Zhu X, Jiang K, Wu H, Deng G, Qiu C. Sodium selenite induces apoptosis via ROS-mediated NF-κB signaling and activation of the Bax-caspase-9-caspase-3 axis in 4T1 cells. J Cell Physiol 2018; 234:2511-2522. [PMID: 30218457 DOI: 10.1002/jcp.26783] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 04/27/2018] [Indexed: 12/27/2022]
Abstract
Sodium selenite (SSE), a source of inorganic selenium, has been widely used as a clinical cancer treatment, but the precise molecular mechanisms of SSE remain to be elucidated. Our in vitro experiments have confirmed that SSE treatment causes a transient increase in intracellular reactive oxygen species (ROS) levels, resulting in the inhibition of nuclear transcription factor-κB (NF-κB) signaling and p65 and nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor, alpha phosphorylation levels in 4T1 cells. The inhibition of NF-κB subsequently increased the expression of the apoptosis gene B-cell lymphoma-2-associated X (Bax) and downregulated the transcription of antiapoptosis genes, such as B-cell lymphoma-2, cellular inhibitor of apoptosis 1, and X-linked inhibitor of apoptosis. Additionally, the accumulation of ROS caused mitochondrial dysfunction, leading to the activation of caspase-9 and -3, thereby resulting in apoptosis. However, modulation of the ROS level by the chemical inhibitor N-acetyl-cysteine reversed these events. Similarly, in vitro murine syngeneic breast tumor models showed that SSE inhibits tumor growth by promoting apoptosis. These results indicate that SSE induces apoptosis via ROS-mediated inhibition of NF-κB signaling and activation of the Bax-caspase-9-caspase-3 axis.
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Affiliation(s)
- Tao Zhang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Gan Zhao
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Xinying Zhu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Kangfeng Jiang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Haichong Wu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Ganzhen Deng
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Changwei Qiu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
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13
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Inhibitory effects of selenium on cadmium-induced cytotoxicity in PC12 cells via regulating oxidative stress and apoptosis. Food Chem Toxicol 2018; 114:180-189. [DOI: 10.1016/j.fct.2018.02.034] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 02/13/2018] [Accepted: 02/14/2018] [Indexed: 12/30/2022]
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14
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Gao X, Guo W, Ge L, Kong F, Xu K, Tang B. Double-ratiometric fluorescence imaging of H2Se and O2˙− under hypoxia for exploring Na2SeO3-induced HepG2 cells' apoptosis. RSC Adv 2018; 8:40984-40988. [PMID: 35557927 PMCID: PMC9091642 DOI: 10.1039/c8ra08142e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 11/16/2018] [Indexed: 11/21/2022] Open
Abstract
Sodium selenite (Na2SeO3), as an anti-tumor drug for inducing tumor cells' apoptosis, has been widely studied under normoxic conditions and has been shown to exhibit oxidative stress process-induced apoptosis. However, since the real tumor environment is hypoxic, the actual mechanism is still unclear. Hence, considering the main metabolite of Na2SeO3 in the metabolic process to be hydrogen selenide (H2Se) and also that it can be converted to superoxide anion (O2˙−) instantaneously in the presence of oxygen, a dual-ratiometric fluorescence imaging system for simultaneous monitoring of the changes of H2Se and O2˙− induced by Na2SeO3-guided tumor cell apoptosis under hypoxic conditions was constructed. Two molecular probes NIR-H2Se and dihydroethidium were used to detect H2Se and O2˙−, respectively, whereas Rhodamine 110 was used as the reference fluorophore. Notably, H2Se levels significantly increased under hypoxic conditions, but there was no change in the level of O2˙−, which is inconsistent with the results of the previous researches. Therefore, we hypothesize that the mechanism of Na2SeO3-induced apoptosis for tumor cells is caused by reductive stress; also, this method can be applied for the future study of other anti-cancer selenium compounds. Sodium selenite (Na2SeO3), as an anti-tumor drug for inducing tumor cells' apoptosis, has been widely studied under normoxic conditions and has been shown to exhibit oxidative stress process-induced apoptosis.![]()
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Affiliation(s)
- Xiaonan Gao
- College of Chemistry
- Chemical Engineering and Materials Science
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
| | - Wenfei Guo
- College of Chemistry
- Chemical Engineering and Materials Science
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
| | - Lihong Ge
- College of Chemistry
- Chemical Engineering and Materials Science
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
| | - Fanpeng Kong
- College of Chemistry
- Chemical Engineering and Materials Science
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
| | - Kehua Xu
- College of Chemistry
- Chemical Engineering and Materials Science
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
| | - Bo Tang
- College of Chemistry
- Chemical Engineering and Materials Science
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
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15
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Selenite inhibits glutamine metabolism and induces apoptosis by regulating GLS1 protein degradation via APC/C-CDH1 pathway in colorectal cancer cells. Oncotarget 2017; 8:18832-18847. [PMID: 27902968 PMCID: PMC5386651 DOI: 10.18632/oncotarget.13600] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Accepted: 10/21/2016] [Indexed: 12/22/2022] Open
Abstract
Glutaminolysis is important for metabolism and biosynthesis of cancer cells, and GLS is essential in the process. Selenite is widely regarded as a chemopreventive agent against cancer risk. Emerging evidence suggests that it also has chemotherapeutic potential in various cancer types, but the mechanism remains elusive. We demonstrate for the first time that supranutritional dose of selenite suppresses glutaminolysis by promoting GLS1 protein degradation and apoptosis. Mechanistically, selenite promotes association of APC/C-CDH1 with GLS1 and leads to GLS1 degradation by ubiquitination, this process is related to induction of PTEN expression. In addition, GLS1 expression is increased in human colorectal cancer tissues compared with normal mucosae. Our data provide a novel mechanistic explanation for the anti-cancer effect of selenite from a perspective of cell metabolism. Moreover, our results indicate that glutaminolysis especially GLS1 could be an attractive therapeutic target in colorectal cancer.
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Sun S, Xie F, Xu X, Cai Q, Zhang Q, Cui Z, Zheng Y, Zhou J. Advanced oxidation protein products induce S-phase arrest of hepatocytes via the ROS-dependent, β-catenin-CDK2-mediated pathway. Redox Biol 2017; 14:338-353. [PMID: 29032312 PMCID: PMC5975226 DOI: 10.1016/j.redox.2017.09.011] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 09/18/2017] [Indexed: 01/16/2023] Open
Abstract
Liver regeneration has important clinical importance in the setting of partial hepatectomy (PH). Following PH, quiescent hepatocytes can reenter cell cycle to restore liver mass. Hepatocyte cell cycle progression, as the basic motivations of liver regeneration, can be disrupted by multiple pathological factors such as oxidative stress. This study aimed to evaluate the role of advanced oxidation protein products (AOPP) in S-phase arrest in hepatocytes. Serum AOPP level were measured during the perioperative period of PH in 33 patients with hepatocellular carcinoma (HCC). Normal Sprague Dawley rats, human and murine liver cell line (HL-7702 and AML-12) were challenged with AOPP prepared by incubation of rat serum albumin (RSA) with hypochlorous acid, and the effect of AOPP on hepatocytes cell cycle progression and liver regeneration was studied after PH. AOPP levels were increased following partial hepatectomy (PH) in patients with primary liver cancer. AOPP treatment impaired liver regeneration in rats following 70% partial hepatectomy. S-phase arrest was induced by AOPP administration in hepatocytes derived from the remnant liver at controlled times following partial hepatectomy in rats, and in HL-7702 and AML-12 cells. The effect of AOPP on hepatocyte S phase arrest was mainly mediated by a nicotinamide adenine dinucleotide phosphate (NADPH) oxidase-dependent reactive oxygen species (ROS) generation, downregulation of downstream β-catenin signaling and decreased cyclin-dependent kinase 2 (CDK2) expression, which inhibited S-phase progression in hepatocytes. This study provides preliminary evidence that AOPP can induce S-phase arrest in hepatocytes via the ROS-dependent, β-catenin-CDK2-mediated pathway. These findings suggest a novel pathogenic role of AOPP contributing to the impaired liver regeneration and may provide the basis for developing new strategies to improve liver regeneration in patients undergoing PH.
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Affiliation(s)
- Shibo Sun
- Department of Hepatobiliary Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Fang Xie
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Xiaoping Xu
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Qing Cai
- Department of Hepatobiliary Surgery and Liver Transplantation Center, Guangzhou General Hospital of Guangzhou Military Area, Guangzhou, Guangdong 510515, China
| | - Qifan Zhang
- Department of Hepatobiliary Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Zhonglin Cui
- Department of Hepatobiliary Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Yujian Zheng
- Department of Hepatobiliary Surgery and Liver Transplantation Center, Guangzhou General Hospital of Guangzhou Military Area, Guangzhou, Guangdong 510515, China
| | - Jie Zhou
- Department of Hepatobiliary Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China.
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17
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Galadari S, Rahman A, Pallichankandy S, Thayyullathil F. Reactive oxygen species and cancer paradox: To promote or to suppress? Free Radic Biol Med 2017; 104:144-164. [PMID: 28088622 DOI: 10.1016/j.freeradbiomed.2017.01.004] [Citation(s) in RCA: 615] [Impact Index Per Article: 87.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 12/16/2016] [Accepted: 01/03/2017] [Indexed: 02/07/2023]
Abstract
Reactive oxygen species (ROS), a group of highly reactive ions and molecules, are increasingly being appreciated as powerful signaling molecules involved in the regulation of a variety of biological processes. Indeed, their role is continuously being delineated in a variety of pathophysiological conditions. For instance, cancer cells are shown to have increased ROS levels in comparison to their normal counterparts. This is partly due to an enhanced metabolism and mitochondrial dysfunction in cancer cells. The escalated ROS generation in cancer cells contributes to the biochemical and molecular changes necessary for the tumor initiation, promotion and progression, as well as, tumor resistance to chemotherapy. Therefore, increased ROS in cancer cells may provide a unique opportunity to eliminate cancer cells via elevating ROS to highly toxic levels intracellularly, thereby, activating various ROS-induced cell death pathways, or inhibiting cancer cell resistance to chemotherapy. Such results can be achieved by using agents that either increase ROS generation, or inhibit antioxidant defense, or even a combination of both. In fact, a large variety of anticancer drugs, and some of those currently under clinical trials, effectively kill cancer cells and overcome drug resistance via enhancing ROS generation and/or impeding the antioxidant defense mechanism. This review focuses on our current understanding of the tumor promoting (tumorigenesis, angiogenesis, invasion and metastasis, and chemoresistance) and the tumor suppressive (apoptosis, autophagy, and necroptosis) functions of ROS, and highlights the potential mechanism(s) involved. It also sheds light on a very novel and an actively growing field of ROS-dependent cell death mechanism referred to as ferroptosis.
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Affiliation(s)
- Sehamuddin Galadari
- Cell Signaling Laboratory, Department of Biochemistry, College of Medicine and Health Sciences, UAE University, P.O. Box 17666, Al Ain, Abu Dhabi, UAE; Al Jalila Foundation Research Centre, P.O. Box 300100, Dubai, UAE.
| | - Anees Rahman
- Cell Signaling Laboratory, Department of Biochemistry, College of Medicine and Health Sciences, UAE University, P.O. Box 17666, Al Ain, Abu Dhabi, UAE.
| | - Siraj Pallichankandy
- Cell Signaling Laboratory, Department of Biochemistry, College of Medicine and Health Sciences, UAE University, P.O. Box 17666, Al Ain, Abu Dhabi, UAE.
| | - Faisal Thayyullathil
- Cell Signaling Laboratory, Department of Biochemistry, College of Medicine and Health Sciences, UAE University, P.O. Box 17666, Al Ain, Abu Dhabi, UAE.
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18
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Bartolini D, Sancineto L, Fabro de Bem A, Tew KD, Santi C, Radi R, Toquato P, Galli F. Selenocompounds in Cancer Therapy: An Overview. Adv Cancer Res 2017; 136:259-302. [PMID: 29054421 DOI: 10.1016/bs.acr.2017.07.007] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
In vitro and in vivo experimental models clearly demonstrate the efficacy of Se compounds as anticancer agents, contingent upon chemical structures and concentrations of test molecules, as well as on the experimental model under investigation that together influence cellular availability of compounds, their molecular dynamics and mechanism of action. The latter includes direct and indirect redox effects on cellular targets by the activation and altered compartmentalization of molecular oxygen, and the interaction with protein thiols and Se proteins. As such, Se compounds interfere with the redox homeostasis and signaling of cancer cells to produce anticancer effects that include alterations in key regulatory elements of energy metabolism and cell cycle checkpoints that ultimately influence differentiation, proliferation, senescence, and death pathways. Cys-containing proteins and Se proteins involved in the response to Se compounds as sensors and transducers of anticancer signals, i.e., the pharmacoproteome of Se compounds, are described and include critical elements in the different phases of cancer onset and progression from initiation and escape of immune surveillance to tumor growth, angiogenesis, and metastasis. The efficacy and mode of action on these compounds vary depending on the inorganic and organic form of Se used as either supplement or pharmacological agent. In this regard, differences in experimental/clinical protocols provide options for either chemoprevention or therapy in different human cancers.
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Affiliation(s)
| | | | - Andreza Fabro de Bem
- Center of Biological Sciences (CCB), Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil; Institute of Biological Sciences, University of Brasilia, Brasilia, Brazil
| | - Kenneth D Tew
- Medical University of South Carolina, Charleston, SC, United States
| | | | - Rafael Radi
- Center for Free Radical and Biomedical Research (CEINBIO), Universidad de la República, Montevideo, Uruguay
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Thamilselvan V, Menon M, Thamilselvan S. Combination of carmustine and selenite effectively inhibits tumor growth by targeting androgen receptor, androgen receptor-variants, and Akt in preclinical models: New hope for patients with castration resistant prostate cancer. Int J Cancer 2016; 139:1632-47. [PMID: 27198552 DOI: 10.1002/ijc.30189] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 04/28/2016] [Accepted: 05/03/2016] [Indexed: 01/12/2023]
Abstract
Despite established androgen receptor (AR) antagonists, AR/AR-variants signaling remain a major obstacle for the successful treatment of castration resistant prostate cancer (CRPC). In addition, CRPC cells adapt to survive via AR-independent pathways to escape next generation therapies. Therefore, there is an urgent need for drugs that can target these signaling pathways in CRPC. In this study, we sought to determine whether carmustine and selenite in combination could induce apoptosis and inhibit growth of CRPC in-vitro and in-vivo. CRPC (22Rv1, VCaP, and PC-3) cell lines in culture and xenograft mouse were used. Combination of carmustine and selenite treatment significantly increased reactive oxygen species, apoptosis and growth inhibition in CRPC cells with down regulation of anti-apoptotic (Bcl-2 and Mcl-1) and proliferative proteins (c-Myc and cyclin-D1). This effect was associated with complete reduction of AR/AR-variants, AR-V7, PSA and significant induction of p27Kip1. Combination treatment substantially abolished phospho-Akt, phospho-GSK-3β, and anchorage-independent growth in AR-positive and AR-negative cells. Consistent with in-vitro results, combination treatment effectively induced apoptosis and completely inhibited xenograft tumor growth and markedly reduced AR/AR-variants, AR-V7, PSA, and Bcl-2 in xenograft tumors without causing genotoxicity in host mice. Individual agent treatment showed only partial effect. The combination treatment showed a significant synergistic effect. The present study is the first to demonstrate that the combination of carmustine and selenite treatment completely suppressed CRPC tumor growth by reducing AR/AR-variants and Akt signaling. Our findings suggest that the combination of carmustine and selenite could constitute a promising next-generation therapy for successful treatment of patients with CRPC.
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Affiliation(s)
| | - Mani Menon
- Vattikuti Urology Institute, Henry Ford Health System, Detroit, MI
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20
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NHE9 induces chemoradiotherapy resistance in esophageal squamous cell carcinoma by upregulating the Src/Akt/β-catenin pathway and Bcl-2 expression. Oncotarget 2016; 6:12405-20. [PMID: 25915159 PMCID: PMC4494947 DOI: 10.18632/oncotarget.3618] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2015] [Accepted: 03/14/2015] [Indexed: 11/25/2022] Open
Abstract
Recently, we found that NHE9 mRNA was upregulated in chemoradiotherapy (CRT)-resistant esophageal squamous cell carcinoma (ESCC); however, the underlying mechanisms were unclear. Here, we aimed to clarify the functional contribution of NHE9 to CRT resistance, understand the molecular basis of NHE9-dependent resistance in ESCC, and identify potential therapeutic targets. Our results showed that NHE9 prevented CRT-induced apoptosis. Importantly, we found that RACK1 is a novel binding partner of NHE9 and that NHE9-dependent induction of CRT resistance requires the activation of RACK1-associated Src/Akt/β-catenin signaling. Moreover, upregulated Bcl-2 protein was also observed in cells exhibiting NHE9-induced CRT resistance. A higher NHE9 level was associated with a poor response to CRT and less decrease in T and N stage in ESCC patients. Furthermore, combining either Dasatinib or ABT-737 with CRT significantly reduced tumor volume, and the response to CRT was restored when these inhibitors were used together with CRT in a xenograft nude mouse model with NHE9 overexpression. Taken together, our findings demonstrate that NHE9 can be an effective predictor of CRT response and may be useful in the development of targeted therapies for CRT-resistant ESCC.
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21
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Yang Y, Luo H, Hui K, Ci Y, Shi K, Chen G, Shi L, Xu C. Selenite-induced autophagy antagonizes apoptosis in colorectal cancer cells in vitro and in vivo. Oncol Rep 2015; 35:1255-64. [PMID: 26676801 PMCID: PMC4750746 DOI: 10.3892/or.2015.4484] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 11/05/2015] [Indexed: 02/01/2023] Open
Abstract
In the present study, we aimed to investigate the relationship between autophagy and apoptosis in selenite-treated colorectal cancer (CRC) cells. The effects of selenite on HCT116 and SW480 cell apoptosis were investigated with an Annexin V/propidium iodide (PI) double staining kit by flow cytometry. The punctate of LC3 protein following treatment with selenite was observed by a laser scanning confocal microscope and by transmission electron microscopy. Using western blot assays, we detected the apoptotic and autophagic markers in both CRC cells and mouse xenograft tumor models. We found that sodium selenite induced autophagy in the two CRC cell lines. Consistent with the in vitro results, we observed that the expression of autophagy marker LC3 was increased. Finally, we discovered that modulation of reactive oxygen species by MnTMPyP inhibited autophagy, while H2O2 activated autophagy. These results help to elucidate the anticancer effect of selenium, providing further evidence to exploit novel anticancer drugs targeting selenium.
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Affiliation(s)
- Yang Yang
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences (CAMS), School of Basic Medicine, Peking Union Medical College (PUMC), Beijing 100005, P.R. China
| | - Hui Luo
- Shenzhen University Health Science Center, Shenzhen 518060, P.R. China
| | - Kaiyuan Hui
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences (CAMS), School of Basic Medicine, Peking Union Medical College (PUMC), Beijing 100005, P.R. China
| | - Yali Ci
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences (CAMS), School of Basic Medicine, Peking Union Medical College (PUMC), Beijing 100005, P.R. China
| | - Kejian Shi
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences (CAMS), School of Basic Medicine, Peking Union Medical College (PUMC), Beijing 100005, P.R. China
| | - Ge Chen
- Department of General Surgery, PUMC Hospital, CAMS, Beijing 100730, P.R. China
| | - Lei Shi
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences (CAMS), School of Basic Medicine, Peking Union Medical College (PUMC), Beijing 100005, P.R. China
| | - Caimin Xu
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences (CAMS), School of Basic Medicine, Peking Union Medical College (PUMC), Beijing 100005, P.R. China
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22
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Brodin O, Eksborg S, Wallenberg M, Asker-Hagelberg C, Larsen EH, Mohlkert D, Lenneby-Helleday C, Jacobsson H, Linder S, Misra S, Björnstedt M. Pharmacokinetics and Toxicity of Sodium Selenite in the Treatment of Patients with Carcinoma in a Phase I Clinical Trial: The SECAR Study. Nutrients 2015; 7:4978-94. [PMID: 26102212 PMCID: PMC4488827 DOI: 10.3390/nu7064978] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 06/11/2015] [Accepted: 06/15/2015] [Indexed: 11/29/2022] Open
Abstract
Background: Sodium selenite at high dose exerts antitumor effects and increases efficacy of cytostatic drugs in multiple preclinical malignancy models. We assessed the safety and efficacy of intravenous administered sodium selenite in cancer patients’ refractory to cytostatic drugs in a phase I trial. Patients received first line of chemotherapy following selenite treatment to investigate altered sensitivity to these drugs and preliminary assessment of any clinical benefits. Materials and Methods: Thirty-four patients with different therapy resistant tumors received iv sodium selenite daily for consecutive five days either for two weeks or four weeks. Each cohort consisted of at least three patients who received the same daily dose of selenite throughout the whole treatment. If 0/3 patients had dose-limiting toxicities (DLTs), the study proceeded to the next dose-level. If 2/3 had DLT, the dose was considered too high and if 1/3 had DLT, three more patients were included. Dose-escalation continued until the maximum tolerated dose (MTD) was reached. MTD was defined as the highest dose-level on which 0/3 or 1/6 patients experienced DLT. The primary endpoint was safety, dose-limiting toxic effects and the MTD of sodium selenite. The secondary endpoint was primary response evaluation. Results and Conclusion: MTD was defined as 10.2 mg/m2, with a calculated median plasma half-life of 18.25 h. The maximum plasma concentration of selenium from a single dose of selenite increased in a nonlinear pattern. The most common adverse events were fatigue, nausea, and cramps in fingers and legs. DLTs were acute, of short duration and reversible. Biomarkers for organ functions indicated no major systemic toxicity. In conclusion, sodium selenite is safe and tolerable when administered up to 10.2 mg/m2 under current protocol. Further development of the study is underway to determine if prolonged infusions might be a more effective treatment strategy.
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Affiliation(s)
- Ola Brodin
- Department of Oncology, Karolinska Institutet, Karolinska University Hospital Södersjukhuset, SE-118 83 Stockholm, Sweden.
| | - Staffan Eksborg
- Department of Women's and Children's Health, Karolinska Institutet, Karolinska University Hospital Solna, SE-171 76 Stockholm, Sweden.
| | - Marita Wallenberg
- Department of Laboratory Medicine, Division of Pathology F46, Karolinska Institutet, Karolinska University Hospital Huddinge, SE-141 86 Stockholm, Sweden.
| | - Charlotte Asker-Hagelberg
- Medical Products Agency, P.O. Box 26, SE-751 03 Uppsala, Sweden.
- Clinical Pharmacology Unit, Department of Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Solna, SE-171 76 Stockholm, Sweden.
| | - Erik H Larsen
- National Food Institute, Technical University of Denmark, DK-2860 Søborg, Denmark.
| | - Dag Mohlkert
- Department of Radiology, Karolinska University Hospital Södersjukhuset, SE-171 76 Stockholm, Sweden.
| | - Clara Lenneby-Helleday
- Department of Oncology, Karolinska Institutet, Karolinska University Hospital Södersjukhuset, SE-118 83 Stockholm, Sweden.
| | - Hans Jacobsson
- Department of Radiology, Karolinska University Hospital, Solna, SE-171 76 Stockholm, Sweden.
| | - Stig Linder
- Department of Oncology-Pathology, Karolinska Institutet, Stockholm SE-171 76, Sweden.
- Department of Medicine and Health, Linköping University, Linköping SE-581 83, Linköping, Sweden.
| | - Sougat Misra
- Department of Laboratory Medicine, Division of Pathology F46, Karolinska Institutet, Karolinska University Hospital Huddinge, SE-141 86 Stockholm, Sweden.
| | - Mikael Björnstedt
- Department of Laboratory Medicine, Division of Pathology F46, Karolinska Institutet, Karolinska University Hospital Huddinge, SE-141 86 Stockholm, Sweden.
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Rudolf E, Rezáčová K, Cervinka M. Activation of p38 and changes in mitochondria accompany autophagy to premature senescence-like phenotype switch upon chronic exposure to selenite in colon fibroblasts. Toxicol Lett 2014; 231:29-37. [PMID: 25204997 DOI: 10.1016/j.toxlet.2014.09.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 07/24/2014] [Accepted: 09/05/2014] [Indexed: 12/17/2022]
Abstract
Effects of chronic exposure to supranutritional sodium selenite (Se) were investigated in colonic fibroblasts. Initially, Se did not produce any gross changes in exposed cells; however, basal levels of autophagy were transiently increased and p38 activity was stimulated. From the 3rd week onwards, Se decreased cell proliferation, with corrensponding changes in cell cycle distribution. Also, in exposed cells oxidative stress and DNA damage slowly but gradually increased along with decreasing mitochondrial function and upon continued elevated activity of p38 kinase. Towards the end of the experiment, premature senescence features became more prominent in treated cells. Pharmacological inhibition as well as gene knockdown of these processes confirmed the involvement of p38 in balancing autophagy and premature senescence in cells exposed to Se and suggests that this element may in a given time frame compromise selected cell populations in digestive system.
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Affiliation(s)
- Emil Rudolf
- Department of Medical Biology and Genetics, Charles University in Prague, Faculty of Medicine in Hradec Králové, Šimkova 870, 500 38 Hradec Králové, Czech Republic.
| | - Kateřina Rezáčová
- Department of Medical Biology and Genetics, Charles University in Prague, Faculty of Medicine in Hradec Králové, Šimkova 870, 500 38 Hradec Králové, Czech Republic
| | - Miroslav Cervinka
- Department of Medical Biology and Genetics, Charles University in Prague, Faculty of Medicine in Hradec Králové, Šimkova 870, 500 38 Hradec Králové, Czech Republic
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Downregulated expression of PTK6 is correlated with poor survival in esophageal squamous cell carcinoma. Med Oncol 2014; 31:317. [PMID: 25377660 DOI: 10.1007/s12032-014-0317-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Accepted: 12/04/2013] [Indexed: 10/24/2022]
Abstract
To investigate the clinical prognostic value of protein tyrosine kinase 6 (PTK6) in patients with esophageal squamous cell carcinoma (ESCC), quantitative RT-PCR and Western blotting were utilized to measure the mRNA and protein expression levels of PTK6 in 29 and eight pairs of ESCC and peritumoral normal esophageal tissues, respectively. Furthermore, the expression of PTK6 protein in 210 ESCCs was examined with immunohistochemistry (IHC), and its clinical value was analyzed using Kaplan-Meier plots and the Cox proportional hazards regression model. The results found that the expression levels of both PTK6 mRNA and protein in ESCC tissues were significantly lower than those in peritumoral normal esophageal tissues. Regarding the IHC analysis of ESCC, the cytoplasmic expression of PTK6 was significantly correlated with tumor grade (P < 0.001). Compared with patients with low PTK6 expression, ESCC patients with overexpression of PTK6 displayed preferable disease-free survival (DFS) and overall survival (OS) (P < 0.001 and P = 0.001, respectively), especially in stage II disease (P = 0.002 and P = 0.021, respectively). PTK6 was evaluated as an independent prognostic factor for ESCC using multivariate Cox regression analysis. All data demonstrated that the expression level of PTK6 is an independent prognostic factor in ESCCs. Low expression of PTK6 is correlated with poor DFS and OS in ESCCs.
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The p38 MAPK-regulated PKD1/CREB/Bcl-2 pathway contributes to selenite-induced colorectal cancer cell apoptosis in vitro and in vivo. Cancer Lett 2014; 354:189-99. [DOI: 10.1016/j.canlet.2014.08.009] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2014] [Revised: 08/05/2014] [Accepted: 08/06/2014] [Indexed: 12/20/2022]
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Fernandes AP, Gandin V. Selenium compounds as therapeutic agents in cancer. Biochim Biophys Acta Gen Subj 2014; 1850:1642-60. [PMID: 25459512 DOI: 10.1016/j.bbagen.2014.10.008] [Citation(s) in RCA: 272] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Revised: 10/06/2014] [Accepted: 10/08/2014] [Indexed: 11/24/2022]
Abstract
BACKGROUND With cancer cells encompassing consistently higher production of reactive oxygen species (ROS) and with an induced antioxidant defense to counteract the increased basal ROS production, tumors have a limited reserve capacity resulting in an increased vulnerability of some cancer cells to ROS. Based on this, oxidative stress has been recognized as a tumor-specific target for the rational design of new anticancer agents. Among redox modulating compounds, selenium compounds have gained substantial attention due to their promising chemotherapeutic potential. SCOPE OF REVIEW This review aims in summarizing and providing the recent developments of our understanding of the molecular mechanisms that underlie the potential anticancer effects of selenium compounds. MAJOR CONCLUSIONS It is well established that selenium at higher doses readily can turn into a prooxidant and thereby exert its potential anticancer properties. However, the biological activity of selenium compounds and the mechanism behind these effects are highly dependent on its speciation and the specific metabolic pathways of cells and tissues. Conversely, the chemical properties and the main molecular mechanisms of the most relevant inorganic and organic selenium compounds as well as selenium-based nanoparticles must be taken into account and are discussed herein. GENERAL SIGNIFICANCE Elucidating and deepening our mechanistic knowledge of selenium compounds will help in designing and optimizing compounds with more specific antitumor properties for possible future application of selenium compounds in the treatment of cancer. This article is part of a Special Issue entitled Redox regulation of differentiation and de-differentiation.
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Affiliation(s)
- Aristi P Fernandes
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics (MBB), Karolinska Institutet, SE-171 77 Stockholm, Sweden.
| | - Valentina Gandin
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Via Marzolo 5, 35131 Padova, Italy
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Moreno E, Doughty-Shenton D, Plano D, Font M, Encío I, Palop JA, Sanmartín C. A dihydroselenoquinazoline inhibits S6 ribosomal protein signalling, induces apoptosis and inhibits autophagy in MCF-7 cells. Eur J Pharm Sci 2014; 63:87-95. [DOI: 10.1016/j.ejps.2014.06.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 06/12/2014] [Accepted: 06/29/2014] [Indexed: 11/17/2022]
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Abdel-Aziz AK, Azab SSE, Youssef SS, El-Sayed AM, El-Demerdash E, Shouman S. Modulation of Imatinib Cytotoxicity by Selenite in HCT116 Colorectal Cancer Cells. Basic Clin Pharmacol Toxicol 2014; 116:37-46. [PMID: 24930392 DOI: 10.1111/bcpt.12281] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Accepted: 05/26/2014] [Indexed: 12/27/2022]
Affiliation(s)
- Amal Kamal Abdel-Aziz
- Pharmacology & Toxicology Department; Faculty of Pharmacy; Ain Shams University; Cairo Egypt
| | - Samar Saad Eldeen Azab
- Pharmacology & Toxicology Department; Faculty of Pharmacy; Ain Shams University; Cairo Egypt
| | | | - Abeer Mostafa El-Sayed
- Tissue Culture & Cytogenetics Unit; Pathology Department; National Cancer Institute; Cairo University; Cairo Egypt
| | - Ebtehal El-Demerdash
- Pharmacology & Toxicology Department; Faculty of Pharmacy; Ain Shams University; Cairo Egypt
| | - Samia Shouman
- Cancer Biology Department; National Cancer Institute; Cairo University; Cairo Egypt
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Wu P, Shi KJ, An JJ, Ci YL, Li F, Hui KY, Yang Y, Xu CM. The LEF1/CYLD axis and cIAPs regulate RIP1 deubiquitination and trigger apoptosis in selenite-treated colorectal cancer cells. Cell Death Dis 2014; 5:e1085. [PMID: 24577083 PMCID: PMC3944232 DOI: 10.1038/cddis.2014.13] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 01/02/2014] [Accepted: 01/03/2014] [Indexed: 01/11/2023]
Abstract
Inhibitor-of-apoptosis protein (IAP) inhibitors have been reported to synergistically reduce cell viability in combination with a variety of chemotherapeutic drugs via targeted cellular IAP (cIAP) depletion. Here, we found that cIAP silencing sensitised colorectal cancer (CRC) cells to selenite-induced apoptosis. Upon selenite treatment, the K63-linked ubiquitin chains on receptor-interacting protein 1 (RIP1) were removed, leading to the formation of the death-inducing complex and subsequent caspase-8 activation. Although the ubiquitinases cIAP1 and cIAP2 were significantly downregulated after a 24-h selenite treatment, cylindromatosis (CYLD) deubiquitinase protein levels were marginally upregulated. Chromatin immunoprecipitation assays revealed that lymphoid enhancer factor-1 (LEF1) dissociated from the CYLD promoter upon selenite treatment, thus abolishing suppression of CYLD gene expression. We corroborated these findings in a CRC xenograft animal model using immunohistochemistry. Collectively, our findings demonstrate that selenite caused CYLD upregulation via LEF1 and cIAP downregulation, both of which contribute to the degradation of ubiquitin chains on RIP1 and subsequent caspase-8 activation and apoptosis. Importantly, our results identify a LEF1-binding site in the CYLD promoter as a potential target for combinational therapy as an alternative to cIAPs.
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Affiliation(s)
- P Wu
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medicine Sciences and School of Basic Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - K J Shi
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medicine Sciences and School of Basic Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - J J An
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medicine Sciences and School of Basic Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Y L Ci
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medicine Sciences and School of Basic Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - F Li
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medicine Sciences and School of Basic Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - K Y Hui
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medicine Sciences and School of Basic Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Y Yang
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medicine Sciences and School of Basic Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - C M Xu
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medicine Sciences and School of Basic Medicine, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
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Estevez AO, Morgan KL, Szewczyk NJ, Gems D, Estevez M. The neurodegenerative effects of selenium are inhibited by FOXO and PINK1/PTEN regulation of insulin/insulin-like growth factor signaling in Caenorhabditis elegans. Neurotoxicology 2014; 41:28-43. [PMID: 24406377 PMCID: PMC3979119 DOI: 10.1016/j.neuro.2013.12.012] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 12/23/2013] [Accepted: 12/27/2013] [Indexed: 12/12/2022]
Abstract
Insulin/insulin-like signaling reduction alters selenium-induced neurodegeneration. Selenium induces nuclear translocation of DAF-16/FOXO3a. DAF-16 overexpression decreases GABAergic and cholinergic motor neuron degeneration. Loss of DAF-18/PTEN increases sensitivity to selenium-induced movement deficits. Glutathione requires DAF-18/PINK-1 to improve selenium-induced movement deficits.
Exposures to high levels of environmental selenium have been associated with motor neuron disease in both animals and humans and high levels of selenite have been identified in the cerebrospinal fluid of patients with amyotrophic lateral sclerosis (ALS). We have shown previously that exposures to high levels of sodium selenite in the environment of Caenorhabditis elegans adult animals can induce neurodegeneration and cell loss resulting in motor deficits and death and that this is at least partially caused by a reduction in cholinergic signaling across the neuromuscular junction. Here we provide evidence that reduction in insulin/insulin-like (IIS) signaling alters response to high dose levels of environmental selenium which in turn can regulate the IIS pathway. Most specifically we show that nuclear localization and thus activation of the DAF-16/forkhead box transcription factor occurs in response to selenium exposure although this was not observed in motor neurons of the ventral cord. Yet, tissue specific expression and generalized overexpression of DAF-16 can partially rescue the neurodegenerative and behavioral deficits observed with high dose selenium exposures in not only the cholinergic, but also the GABAergic motor neurons. In addition, two modifiers of IIS signaling, PTEN (phosphatase and tensin homolog, deleted on chromosome 10) and PINK1 (PTEN-induced putative kinase 1) are required for the cellular antioxidant reduced glutathione to mitigate the selenium-induced movement deficits. Studies have suggested that environmental exposures can lead to ALS or other neurological diseases and this model of selenium-induced neurodegeneration developed in a genetically tractable organism provides a tool for examining the combined roles of genetics and environment in the neuro-pathologic disease process.
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Affiliation(s)
- Annette O Estevez
- Department of Neurology, University of Arizona College of Medicine, Tucson, AZ 85724, USA.
| | - Kathleen L Morgan
- Veterans Affairs Pittsburgh Healthcare System, Research and Development (151U), University Drive C, Pittsburgh, PA 15240, USA.
| | - Nathaniel J Szewczyk
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA.
| | - David Gems
- Institute of Healthy Ageing, and Department of Genetics, Evolution, and Environment, University College London, The Darwin Building, Gower Street, London WC1E 6BT, UK.
| | - Miguel Estevez
- Department of Neurology, University of Arizona College of Medicine, Tucson, AZ 85724, USA; Veterans Affairs Pittsburgh Healthcare System, Research and Development (151U), University Drive C, Pittsburgh, PA 15240, USA.
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Pan Y, Zhang J, Liu W, Shu P, Yin B, Yuan J, Qiang B, Peng X. Dok5 is involved in the signaling pathway of neurotrophin-3 against TrkC-induced apoptosis. Neurosci Lett 2013; 553:46-51. [PMID: 23954828 DOI: 10.1016/j.neulet.2013.08.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Revised: 07/29/2013] [Accepted: 08/05/2013] [Indexed: 01/19/2023]
Abstract
TrkC is a dependence receptor and many reports have shown that neurotrophin-3 promotes cell survival by inhibiting TrkC-induced apoptosis in many cell lines. However, the identity of the adaptor protein involved in the NT-3/TrkC signaling pathway regulating cell death and survival remains unclear. The downstream of tyrosine kinase/docking protein (Dok) adaptor protein 5 is one substrate of the TrkC receptor. Because NT-3 and its receptor, TrkC, are strongly expressed by sensory neurons, we measured the expression of Dok5 and TrkC in the developing mouse spinal cord and dorsal root ganglia (DRG). We found that the number of cells positive for both Dok5 and TrkC decreases with DRG development. Immunoprecipitation and immunofluorescence staining showed that Dok5 interacted with TrkC and partially colocalized with TrkC in DRG neurons. In HEK293T cells, TrkC triggered apoptosis, but NT-3 prevented TrkC-induced apoptosis. Interestingly, siRNA knockdown of Dok5 expression partially prevented the protection of NT-3 against TrkC-induced apoptosis by regulating the activity of caspase-3. Taken together, we concluded that Dok5 is necessary for NT-3 signaling to block TrkC-induced apoptosis.
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Affiliation(s)
- Yanfang Pan
- The State Key Laboratory of Medical Molecular Biology, Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, PR China
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Hussain I, Eloy JA, Carmel PW, Liu JK. Molecular oncogenesis of craniopharyngioma: current and future strategies for the development of targeted therapies. J Neurosurg 2013; 119:106-12. [PMID: 23560577 DOI: 10.3171/2013.3.jns122214] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Craniopharyngiomas are benign intracranial tumors that arise in the suprasellar and intrasellar region in children and adults. They are associated with calcification on neuroimaging, endocrinopathies, vision problems, and recurrence following subtotal resection. Molecular studies into their genetic basis have been limited, and therefore targeted medical therapies for this tumor have eluded physicians. With the discovery of aberrant Wnt/β-catenin pathway signaling in the pathogenesis of the most common subtype of craniopharyngioma (adamantinomatous), the identification of candidate genes and proteins implicated in this cascade provide attractive targets for future therapies. The recent development of a genetically engineered animal model of this tumor may also serve as a platform for evaluating potential therapies prior to clinical trials in humans. Advances in understanding the molecular pathogenesis of tumor recurrence have also been made, providing clues to develop adjuvant and neoadjuvant therapies to couple with tumor resection for optimal response rates. Finally, advances in genomic technologies and next-generation sequencing will underlie the translation of these genetic and molecular studies from the bench to clinical practice. In this review, the authors present an analysis of the molecular oncogenesis of craniopharyngioma and current directions in the development of novel therapies for these morbid, yet poorly understood brain tumors.
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Affiliation(s)
- Ibrahim Hussain
- Department of Neurological Surgery, Neurological Institute of New Jersey, University of Medicine and Dentistry of New Jersey-New Jersey Medical School, Newark, NJ 07103, USA
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PTEN-regulated AKT/FoxO3a/Bim signaling contributes to reactive oxygen species-mediated apoptosis in selenite-treated colorectal cancer cells. Cell Death Dis 2013; 4:e481. [PMID: 23392169 PMCID: PMC3734838 DOI: 10.1038/cddis.2013.3] [Citation(s) in RCA: 119] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Mounting evidence shows that selenium possesses chemotherapeutic potential against tumor cells, including leukemia, prostate cancer and colorectal cancer (CRC) cells. However, the detailed mechanism by which sodium selenite specifically kills tumor cells remains unclear. Herein, we demonstrated that supranutritional doses of selenite-induced apoptosis in CRC cells through reactive oxygen species (ROS)-dependent modulation of the PI3K/AKT/FoxO3a signaling pathway. First, we found that selenite treatment in HCT116 and SW480 CRC cells caused inhibition of AKT and the nuclear accumulation of FoxO3a by western blot and immunofluorescence analyses, respectively, thereby facilitating transcription of the target genes bim and PTEN. Modulation of the AKT/FoxO3a/Bim signaling pathway by chemical inhibitors or RNA interference revealed that these events were critical for selenite-induced apoptosis in CRC cells. Additionally, we discovered that FoxO3a-mediated upregulation of PTEN exerted a further inhibitory effect on the AKT survival pathway. We also corroborated our findings in vivo by performing immunohistochemistry experiments. In summary, our results show that selenite could induce ROS-dependent FoxO3a-mediated apoptosis in CRC cells and xenograft tumors through PTEN-mediated inhibition of the PI3K/AKT survival axis. These results help to elucidate the molecular mechanisms underlying selenite-induced cell death in tumor cells and provide a theoretical basis for translational applications of selenium.
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Brigelius-Flohé R, Kipp AP. Selenium in the Redox Regulation of the Nrf2 and the Wnt Pathway. Methods Enzymol 2013; 527:65-86. [DOI: 10.1016/b978-0-12-405882-8.00004-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Anti-apoptotic effect of claudin-1 on TNF-α-induced apoptosis in human breast cancer MCF-7 cells. Tumour Biol 2012; 33:2307-15. [PMID: 22941467 DOI: 10.1007/s13277-012-0493-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2012] [Accepted: 08/13/2012] [Indexed: 12/29/2022] Open
Abstract
Accumulating evidence reveals that aberrant expression of claudins manifests in various tumors; however, their biological functions are poorly understood. Here, we report on the elevated expression of claudin-1 in human breast cancer MCF-7 cells under tumor necrosis factor (TNF)-α treatment. Interestingly, the increased expression of claudin-1 contributes to an anti-apoptotic role in TNF-α-induced apoptosis. In line with this, upon TNF-α stimulus, downregulation of claudin-1 by siRNA knockdown results in a significant increase in cleavage of caspase-8 and poly (ADP-ribose) polymerase, a decrease of cyclinD1 expression, and DNA fragmentation. Consistently, TdT-mediated dUTP nick end labeling assay also shows that loss of claudin-1 increases the susceptibility of MCF-7 cells to TNF-α-induced apoptosis. However, there is no obvious effect on the expression of Bax and p53 after the treatment aforementioned. In addition, TNF-α increases the amount of claudin-1 and the cytoplasmic accumulation of β-catenin, while claudin-1 siRNA increases the amount of β-catenin in the cell membrane as well as the amount of E-cadherin in the cytoplasm. In conclusion, our data reveal a novel role of claudin-1 in regulating apoptosis in MCF-7 cells.
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Ma S, Bao JYJ, Kwan PS, Chan YP, Tong CM, Fu L, Zhang N, Tong AHY, Qin YR, Tsao SW, Chan KW, Lok S, Guan XY. Identification of PTK6, via RNA sequencing analysis, as a suppressor of esophageal squamous cell carcinoma. Gastroenterology 2012; 143:675-686.e12. [PMID: 22705009 DOI: 10.1053/j.gastro.2012.06.007] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2011] [Revised: 05/31/2012] [Accepted: 06/04/2012] [Indexed: 12/20/2022]
Abstract
BACKGROUND & AIMS Esophageal squamous cell carcinoma (ESCC) is the most commonly observed histologic subtype of esophageal cancer. ESCC is believed to develop via accumulation of numerous genetic alterations, including inactivation of tumor suppressor genes and activation of oncogenes. We searched for transcripts that were altered in human ESCC samples compared with nontumor tissues. METHODS We performed integrative transcriptome sequencing (RNA-Seq) analysis using ESCC samples from 3 patients and adjacent nontumor tissues to identify transcripts that were altered in ESCC tissue. We performed molecular and functional studies of the transcripts identified and investigated the mechanisms of alteration. RESULTS We identified protein tyrosine kinase 6 (PTK6) as a transcript that was significantly down-regulated in ESCC tissues and cell lines compared with nontumor tissues or immortalized normal esophageal cell lines. The promoter of the PTK6 gene was inactivated in ESCC tissues at least in part via hypermethylation and histone deacetylation. Knockdown of PTK6 in KYSE30 ESCC cells using small hairpin RNAs increased their ability to form foci, migrate, and invade extracellular matrix in culture and form tumors in nude mice. Overexpression of PTK6 in these cells reduced their proliferation in culture and tumor formation in mice. PTK6 reduced phosphorylation of Akt and glycogen synthase kinase (GSK)3β, leading to activation of β-catenin. CONCLUSIONS PTK6 was identified as a transcript that is down-regulated in human ESCC tissues via epigenetic modification at the PTK6 locus. Its product appears to regulate cell proliferation by reducing phosphorylation of Akt and GSK3β, leading to activation of β-catenin. Reduced levels of PTK6 promote growth of xenograft tumors in mice; it might be developed as a marker of ESCC.
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Affiliation(s)
- Stephanie Ma
- Department of Pathology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Jessie Y J Bao
- Genome Research Centre, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Pak Shing Kwan
- Department of Pathology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Yuen Piu Chan
- Department of Pathology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Carol M Tong
- Department of Pathology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Li Fu
- Department of Clinical Oncology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Na Zhang
- Genome Research Centre, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Amy H Y Tong
- Genome Research Centre, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Yan-Ru Qin
- Department of Clinical Oncology, First Affiliated Hospital, Zhengzhou University, Zhengzhou, China
| | - Sai Wah Tsao
- Department of Anatomy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Kwok Wah Chan
- Department of Pathology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Si Lok
- Genome Research Centre, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China.
| | - Xin-Yuan Guan
- Department of Clinical Oncology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China.
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Barrasa JI, Santiago-Gómez A, Olmo N, Lizarbe MA, Turnay J. Resistance to butyrate impairs bile acid-induced apoptosis in human colon adenocarcinoma cells via up-regulation of Bcl-2 and inactivation of Bax. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2012; 1823:2201-9. [PMID: 22917577 DOI: 10.1016/j.bbamcr.2012.08.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Revised: 07/26/2012] [Accepted: 08/09/2012] [Indexed: 12/22/2022]
Abstract
A critical risk factor in colorectal carcinogenesis and tumor therapy is the resistance to the apoptotic effects of different compounds from the intestinal lumen, among them butyrate (main regulator of colonic epithelium homeostasis). Insensitivity to butyrate-induced apoptosis yields resistance to other agents, as bile acids or chemotherapy drugs, allowing the selective growth of malignant cell subpopulations. Here we analyze bile acid-induced apoptosis in a butyrate-resistant human colon adenocarcinoma cell line (BCS-TC2.BR2) to determine the mechanisms that underlay the resistance to these agents in comparison with their parental butyrate-sensitive BCS-TC2 cells. This study demonstrates that DCA and CDCA still induce apoptosis in butyrate-resistant cells through increased ROS production by activation of membrane-associated enzymes and subsequent triggering of the intrinsic mitochondrial apoptotic pathway. Although this mechanism is similar to that described in butyrate-sensitive cells, cell viability is significantly higher in resistant cells. Moreover, butyrate-resistant cells show higher Bcl-2 levels that confer resistance to bile acid-induced apoptosis sequestering Bax and avoiding Bax-dependent pore formation in the mitochondria. We have confirmed that this resistance is reverted using the Bcl-2 inhibitor ABT-263, thus demonstrating that the lower sensitivity of butyrate-resistant cells to the apoptotic effects of bile acids is mainly due to increased Bcl-2 levels.
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Affiliation(s)
- Juan I Barrasa
- Departamento de Bioquímica y Biología Molecular I, Facultad de Ciencias Químicas, Universidad Complutense, 28040-Madrid, Spain
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Sanmartín C, Plano D, Sharma AK, Palop JA. Selenium compounds, apoptosis and other types of cell death: an overview for cancer therapy. Int J Mol Sci 2012; 13:9649-9672. [PMID: 22949823 PMCID: PMC3431821 DOI: 10.3390/ijms13089649] [Citation(s) in RCA: 185] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Revised: 07/23/2012] [Accepted: 07/24/2012] [Indexed: 02/07/2023] Open
Abstract
Selenium (Se) is an essential trace element involved in different physiological functions of the human body and plays a role in cancer prevention and treatment. Induction of apoptosis is considered an important cellular event that can account for the cancer preventive effects of Se. The mechanisms of Se-induced apoptosis are associated with the chemical forms of Se and their metabolism as well as the type of cancer studied. So, some selenocompounds, such as SeO2 involve the activation of caspase-3 while sodium selenite induces apoptosis in the absence of the activation of caspases. Modulation of mitochondrial functions has been reported to play a key role in the regulation of apoptosis and also to be one of the targets of Se compounds. Other mechanisms for apoptosis induction are the modulation of glutathione and reactive oxygen species levels, which may function as intracellular messengers to regulate signaling pathways, or the regulation of kinase, among others. Emerging evidence indicates the overlaps between the apoptosis and other types of cell death such as autophagy. In this review we report different processes of cell death induced by Se compounds in cancer treatment and prevention.
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Affiliation(s)
- Carmen Sanmartín
- Department of Organic and Pharmaceutical Chemistry, University of Navarra, Irunlarrea 1, Pamplona E-31008, Spain; E-Mails: (D.P.); (J.A.P.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +34-948-425-600; Fax: +34-948-425-649
| | - Daniel Plano
- Department of Organic and Pharmaceutical Chemistry, University of Navarra, Irunlarrea 1, Pamplona E-31008, Spain; E-Mails: (D.P.); (J.A.P.)
- Department of Pharmacology, Penn State Hershey Cancer Institute, Penn State Hershey College of Medicine, CH72, 500 University Drive, Hershey, PA 17033, USA; E-Mail:
| | - Arun K. Sharma
- Department of Pharmacology, Penn State Hershey Cancer Institute, Penn State Hershey College of Medicine, CH72, 500 University Drive, Hershey, PA 17033, USA; E-Mail:
| | - Juan Antonio Palop
- Department of Organic and Pharmaceutical Chemistry, University of Navarra, Irunlarrea 1, Pamplona E-31008, Spain; E-Mails: (D.P.); (J.A.P.)
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miR-548c-5p inhibits proliferation and migration and promotes apoptosis in CD90(+) HepG2 cells. Radiol Oncol 2012; 46:233-41. [PMID: 23077462 PMCID: PMC3472946 DOI: 10.2478/v10019-012-0025-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Accepted: 02/01/2012] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Since the introduction of the theory of tumour stem cells (TSCs), the liver cancer stem cell (LCSC)-like cells have become one of the focuses in the research on liver cancer. MATERIALS AND METHODS.: In this study, CD90(+) cells were applied as the possible LCSC-like cells, and the miRNA and gene expression were analyzed in the CD90(+) HepG2 cells. The pilot study showed miR-548c-5p exerted potential effect on the CD90(+) HepG2 cells and was thereafter applied for the further study. CD90(+) HepG2 cells were assigned to miR-548c-5p mimic transfection group and control group. MTT assay was performed to detect the proliferation of CD90(+) HepG2 cells. The migration and invasion abilities were examined by wound healing assay and transwell migration assay, respectively. A detection of apoptosis was performed by fluorescence microscopy. RESULTS Our results showed that caspase-3 and bcl-2 were down-regulated while caspase-8 was up-regulated in the CD90(+) HepG2 cells. Moreover, the miR-548c-5p transfection could down-regulate the expression of β-catenin, Tg737, bcl-2, bcl-XL, and caspase-3, inhibit the proliferation, migration and invasion and promote the apoptosis of the CD90(+) HepG2 cells. CONCLUSIONS Our findings indicate the imbalance between apoptosis and anti-apoptosis in the LCSC-like cells, which influence the biological features of LCSC-like cells. miRNA plays a regulatory role in the LCSC-like cells among which miR-548c-5p might be a suppressor.
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